Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$93M |
| 2 |
Citigroup
C
|
+$74.8M |
| 3 |
Pinduoduo
PDD
|
+$50.7M |
| 4 |
Intel
INTC
|
+$47.1M |
| 5 |
Broadcom
AVGO
|
+$46.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$94.5M |
| 2 |
Pfizer
PFE
|
+$66.4M |
| 3 |
Boeing
BA
|
+$61.6M |
| 4 |
PayPal
PYPL
|
+$42.2M |
| 5 |
GE Aerospace
GE
|
+$42M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.53% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.21% |
| 4 | Financials | 0.2% |
| 5 | Materials | 0.12% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
4276
PUT
HEICO Corp Class A
HEI.A
$36.4B
| $290K | ﹤0.01% |
1,300
-8,400
| -87% | -$1.42M |
|
4277
CALL
Kulicke & Soffa
KLIC
$4.58B
| $290K | ﹤0.01% |
5,900
+2,100
| +55% | +$98.7K |
|
4278
Sana Biotechnology
SANA
$910M
| $290K | ﹤0.01% |
53,288
+6,772
| +15% | +$54K |
|
|
SCS
4279
CALL
DELISTED
Steelcase
SCS
| $290K | ﹤0.01% |
22,400
-3,200
| -13% | -$40.8K |
|
4280
CALL
Gentherm
THRM
$1.29B
| $290K | ﹤0.01% |
5,900
-3,100
| -34% | -$160K |
|
4281
CALL
Petco
WOOF
$808M
| $290K | ﹤0.01% |
76,800
+35,300
| +85% | +$90.2K |
|
4282
CALL
CrossAmerica Partners
CAPL
$842M
| $289K | ﹤0.01% |
14,600
+12,400
| +564% | +$263K |
|
|
CVGW
4283
DELISTED
Calavo Growers
CVGW
| $289K | ﹤0.01% |
12,771
+10,645
| +501% | +$279K |
|
4284
CALL
Travere Therapeutics
TVTX
$5.23B
| $289K | ﹤0.01% |
35,200
+16,100
| +84% | +$108K |
|
|
4285
PUT
Travere Therapeutics
TVTX
$5.23B
| $289K | ﹤0.01% |
35,200
+20,800
| +144% | +$140K |
|
|
GOLD
4286
PUT
Gold.com Inc
GOLD
$1.18B
| $288K | ﹤0.01% |
8,900
+4,500
| +102% | +$166K |
|
4287
CALL
KB Financial Group
KB
$39.8B
| $288K | ﹤0.01% |
5,100
-2,900
| -36% | -$158K |
|
4288
CALL
Quaker Houghton
KWR
$2.66B
| $288K | ﹤0.01% |
1,700
| – | – |
|
|
CERE
4289
DELISTED
Cerevel Therapeutics Holdings, Inc. Common Stock
CERE
| $288K | ﹤0.01% |
+7,051
| New | +$294K |
|
4290
CALL
Ginkgo Bioworks
DNA
$518M
| $287K | ﹤0.01% |
21,488
+10,243
| +91% | +$306K |
|
4291
Nike
NKE
$63.3B
| $287K | ﹤0.01% |
3,815
-292,206
| -99% | -$27.2M |
|
|
VZIO
4292
CALL
DELISTED
VIZIO Holding Corp.
VZIO
| $287K | ﹤0.01% |
26,600
-15,500
| -37% | -$166K |
|
4293
PUT
Ecopetrol
EC
$33.2B
| $286K | ﹤0.01% |
25,600
+21,500
| +524% | +$255K |
|
4294
CALL
FTAI Infrastructure
FIP
$480M
| $286K | ﹤0.01% |
33,200
+32,300
| +3,589% | +$246K |
|
4295
PUT
Omeros
OMER
$823M
| $286K | ﹤0.01% |
70,500
+28,500
| +68% | +$102K |
|
4296
CALL
Kinetik
KNTK
$3.76B
| $285K | ﹤0.01% |
6,900
-35,300
| -84% | -$1.4M |
|
|
UDMY
4297
CALL
DELISTED
Udemy
UDMY
| $285K | ﹤0.01% |
33,100
-29,500
| -47% | -$280K |
|
|
ONC
4298
PUT
BeOne Medicines Ltd
ONC
$34.2B
| $285K | ﹤0.01% |
2,000
-2,300
| -53% | -$354K |
|
4299
CALL
Kemper
KMPR
$1.81B
| $284K | ﹤0.01% |
4,800
+3,400
| +243% | +$200K |
|
4300
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
$291M
| $284K | ﹤0.01% |
8,260
-21,013
| -72% | -$745K |
|
Similar funds
Simplex Trading's Q2 2024 Portfolio in Review
As of Q2 2024, Simplex Trading held 10,213 positions worth $162B, down 6.5% from $173B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading withdrew a net $19.2B in Q2 2024, closing 1,431 positions and reducing 4,061 holdings. Its most notable exit was Boeing, an estimated $61.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.53% of assets, up from 0.38% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in Citigroup worth $77M.
- Simplex Trading's largest Q2 2024 buy was Citigroup: 1,213,247 shares worth $77M.
- Simplex Trading added most to NVIDIA in Q2 2024, an estimated $93M increase.
- Simplex Trading's biggest Q2 2024 reduction was State Street Energy Select Sector SPDR ETF, cutting an estimated $94.5M.
- Simplex Trading fully exited Boeing in Q2 2024, selling an estimated $61.6M.
- Simplex Trading's ten largest holdings make up 50% of its $162B portfolio in Q2 2024.
- Simplex Trading opened 1,358 new positions and closed 1,431 in Q2 2024.
- Simplex Trading's portfolio value fell 6.5% quarter-over-quarter to $162B.
Based on Simplex Trading's 13F filing for Q2 2024, filed 25 Jul 2024.